Mark Sufrin Books

George Catlin

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A biography of the painter, author, and ethnographer who devoted his life to recording Indian life, not only in this country but in South America and Asia.

Stephen Crane

By Mark Sufrin

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A biography of the American writer who, despite an untimely death at twenty-eight, secured a place in literary history for his originality, range, and complexity.

Dangerous Games Masters of the Universe Heroic Champions

By Mark Sufrin

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Operation Hoax Gobots Heroic Champions

By Mark Sufrin

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The story of George Bush

By Mark Sufrin

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A biography of a man who has served the United States in many capacities, most currently as the forty-first President.

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.